Rao, M R, P L Mafongoya, F R Kwesiga, and J A Maghembe. 2016. “Nutrient Cycling in Agroforestry Systems of the Semi-Arid Tropics of Africa”. Annals of Arid Zone 38 (3 & 4). https://doi.org/10.56093/aaz.v38i3 & 4.65598.